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Chloe 时间: 12-27 03:26   主题:无标题
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Earlene 时间: 12-27 03:05   主题:无标题
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Hilda 时间: 12-27 02:52   主题:无标题
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Gerard 时间: 12-27 02:22   主题:无标题
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3. The Advanced Manufacturing Process of Powder metallurgy
The creation of a tungsten carbide ring is an engineering feat that diverges entirely from the traditional jewelry-making methods of casting or forging soft metals like gold and silver. Because tungsten carbide has an impractically high melting point far exceeding that of a standard jeweler‘s torch it cannot be melted and poured into a mold.
Instead the process relies on a highly specialized technique known as Powder metallurgy or sintering. The journey begins with ultra-fine tungsten metal and carbon powders which are meticulously measured and blended often with a nickel binder to ensure a uniform composition. This composite powder is then poured into high-pressure steel dies in the basic cylindrical shape of the desired ring and subjected to immense hydraulic pressure compressing the powder into a highly dense yet still brittle "green state" ring blank.
The crucial next step
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Barb 时间: 12-27 02:15   主题:无标题
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Mathew 时间: 12-27 01:13   主题:无标题
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Angelika 时间: 12-27 01:06   主题:无标题
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Sherryl 时间: 12-27 00:56   主题:无标题
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Narkolog n 时间: 12-27 00:53   主题:Нарколог на дом
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ysilenie p 时间: 12-27 00:06   主题:усиление проемов
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